Threaded closure with chain binder
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 3, 2004
Grant Date -
May 1, 2003
app pub date -
Oct 30, 2001
filing date -
Oct 30, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Closure 10 includes a closure hub 12 for receiving a closure cap 30. A vessel end of the hub may be welded to a pressurized vessel or pipeline. A pulling device 20 may include a pivot member 26, a pulling lever 27, a pulling connector 28, and a flexible member 46. A pulling lever is connected by a connector pivot 23 to the pivot member, and the pulling connector is connected at a lever pivot 29 to the pulling lever. In the method of the invention, the pulling lever is pulled toward an anchor to thread or unthread the cap from the hub.
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